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Epifauna vs. Infauna

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Jordi Viscarri

on 14 January 2014

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Transcript of Epifauna vs. Infauna


all of the animal life of a particular region or time.
Epifauna/ Infauna
There are two groups of benthic organisms, based on their habitat: epifauna and infauna. Epifauna live attached to a surface and infauna live within the Bay’s bottom sediments.
Infauna
burrow into bottom sediments. Processes such as bioturbation, or sediment disturbance, is caused by infaunal burrowing and feeding, especially by deposit feeder species such as worms or certain species of clams.
Infauna
Worms, clams and other infauna form their own communities that are connected to the water by tubes and tunnels.
Infauna
As part of a complex food web, infaunal communities are composed of both predators and prey. Trophic level of these species may change during its lifecycle as the organism grows and its size, feeding mechanism, and nutritional requirements change during ontogeny.
Epifauna
live attached to hard surfaces such as rocks, shells and pilings. They also live directly on the surface of the Bay’s bottom.
Epifauna
Epifauna include oysters, sponges, sea squirts, sea stars and barnacles.

An oyster reef is an example of an epifaunal benthic community.
Epifauna vs. Infauna
Fauna
Full transcript